Transcript for Teddy Kremer, 30, is a Batboy For the Cincinnati Reds With Down Syndrome

And finally tonight, the young man who brought joy to his favorite baseball team, inspiring the players to win and the fans to cheer the game of life. From our friends at espn abc's chris conley and the bat boy who is america strong. Reporter:30-year-old teddy kremer is a die-hard cincinnati reds fan, whose sheer enthusiasm has electrified his team. If you're mad and you see teddy, there is no way you can be mad ever again. Reporter: Could you ever have imagined 30 years ago that this would be the son in your life? No, never. She said you might want to think about institutional liesing. We were not going to do that. Reporter: With their constant support teddy grew up with a love of sports as big as his upbeat personality. Sometimes people can be mean sometimes. Well, I just walk away. Walk away. Reporter: At a charity event an item in a silent action caught the kremer's eye. Honorary bat boy. They bid on it and won. I was so happy, so happy for it. Reporter: That night teddy's joy and energy captivated the team, captured in this iconic image. That picture ran the next day and then the teddy story kind of blew up. Go, baby. He believes that when he's here we're going to win and half of winning is believing. Reporter: And believe he did. When the redssked him back to the dugout a second time. I'm going to get hot today because of you. Thanks. Reporter: That night off today frazier struck out in the second inning, teddy offered enkurnlment. I said, todd, that's okay. Reporter: With frazier due up again, teddy had something to say. He's like, hey todd. He's like, man, I love you. I go, really? I love you, too, brother. Hit a home run. I said, you got it. That ball clubbed into straightaway center field and that one will fly out of here! I looked out of the corner of my eye and he's waiting there already. Look at teddy. He's excited with todd frazier. He's more excited than todd is. I gave him a big bear hug. He jumped on me like we won the world championship. That little life that nobody thought was going to do anything has does something. That's what makes teddy kremer america strong. Chris conley, abc news, cincinnati, ohio.

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